Earth's oceans are mysterious, largely unexplored places, but the enormous oceans of Neptune and Uranus have them beat.

A nearly new moon and mostly clear skies will present near ideal viewing conditions for the planet parade through Feb. 28.

Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey ...

The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.

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Why the 'Planet Parade' will peak this weekend and look its best until 2036 as all seven other planets in the solar system ...

Astrophysicists have been grappling with the question of how water arrived on our young planet for decades. One of the ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale ...